<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>vue 01</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>

<body>
    <div id="app">{{msg}}

    </div>
    <script text="text/javascript">
        var app = new Vue({
            el: '#app',
            data: {
                msg: "I am coming!",
            }
        });
    </script>
</body>